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A cooler is a piece of equipment that lowers
the temperature of a substance or mixture of substances. The inside of
a cooler has many coils that contain a cold liquid. A stream enters the
cooler and the components in the stream become cooler as the liquid in
the coils becomes warmer. The details of how this heat transfer takes place
and how we can work with this idea mathematically will be learned in a
class known as Thermodynamics.
A basic schematic of a cooler is shown below:
A heater is a piece of equipment that raises
the temperature of a substance in the same way that a cooler lowers
the temperature of a substance. A cool stream enters the heater where coils
containing a hot liquid transfer heat to the cooler liquid. In some cases,
electricity is used to heat a metal coil, which then is placed in contact
with the substance that we want to apply the heat to. If you have ever
boiled water on a coil stove top,
A basic schematic of a heater is shown below:
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